LXC 3.0, unlike 2.1, doesn't support old configuration formats at all
and because our previous approach to handling old format was incomplete,
running `vagrant up` on a system with LXC 3.0 would fail, even if the
base box itself was made with modernized config.
This commit fixes this problem: is the box has a modern config, it's
going to be properly created and booted under LXC 3.0. It does so
without breaking the support for LXC < 2.1
Since redir 2.x upstream is not evolving it, Joachim Nilsson adopted it
and have started to work on it and publish a new command line interface
(check out https://github.com/troglobit/redir). The redir 3.1 is already
available in Debian and Ubuntu in their stable releases.
`lxc-info -iH` to retrieve IP address was not available in early LXC
development but was there at LXC 1.0. Because we've bumped our minimum
LXC requirement to v1.0 recently, we can simplify the IP retrieval
process and also get rid of the `dnsmasq` fallback.
By looking at the code, it seems that it was a goal to make the sudo
wrapper path configurable through the Vagrantfile, but it wasn't
effective and didn't make much sense (that kind of config is a per-host
config, not a per-guest one).
This caused the cause to be needlessly complex by giving the Provider
the responsibility of instanciating the wrapper. This commit gets rid of
that.
I didn't get rid of `sudo_wrapper` injection in `Driver` and
`Driver::CLI` constructors because they're needed for tests. I'm not
ready to tackle this yet.
We're using snapshots in a CI set-up so that a Vagrant cluster can be built
once, then each push to the repository only checked as an incremental
update to the cluster. We copy each LXC VM to a master image, then re-create
the original names as snapshots.
This change corrects a method which assumes the LXC root path in the config
file is a simple directory name, which is only true for directory-backed
instances.
Conflicts:
spec/unit/driver_spec.rb
* for lxc to 1.0.0 using constant Vagrant::LXC::Driver::DEFAULT_CONTAINERS_PATH
* change method Vagrant::LXC::Driver::CLI#version to call lxc-create if lxc-version command not exists (to lxc version 1.0.0)
